A good hard working Polish friend of mine received an emergency phone call and had to leave work because his son was apparently seriously ill.
The child (under 2 years) was dragging his leg, couldn't stand or walk properly.
His mother had taken him to see a GP, and was advised to go to hospital straight away, that morning.
Whilst they were in the hospital, they were seen by one doctor, then another.... then another, they took blood, did all sorts of tests etc, including taking X-ray's.
After hours and hours they were still none the wiser and just a waste of time.